Roll Forming
Roll forming is a type of metalworking process, where in a continuous operation is performed with the bending system. This involves a long piece of metal being moved through a series of roll sets or rolling stands, where each roller performs an increasing length of the total bend. This roll forming continues till the required cross-section of the metal is achieved. The roll forming process is very suitable for operations where long lengths and huge quantities are required, that is it is used mainly for bulk operations.
Using a roll forming stand, a huge array of cross-sections can be created of the metal work piece. However, each of them will need a set of tools that have been specifically designed for that purpose. The roll formings are generally designed with a flower like pattern ending in a sequential setting of cross-sections of the metal, a single one for each of the rolls in the roll forming process. The contours of the roll formings are created based upon the contours of the profile cross-sections. The roll sets are very costly though, and due to this most of the time a kind of simulation technique is used to authenticate the rolls designed and to reduce the stand count and material stress in the roll forming process.
Nowadays, roll forming techniques are used in machines to create stud cum track profiles, or also for an entirely new set of profile rolls. These roll forming techniques are done on the mill which is separated along its central median, and the flange, the webs, and the ear sizes are established with the help of a pre-set control panel. Roll forming medians are normally set-up having numerous configurations to beat out the parts via a continuous operational system. To cut out a single part of a desired length, the medians are set-up using previously cut dies, in which one blank goes through the entire roll mill.
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